leumann



R. LEUMANN.

MACHINE FOR WRAPPING SWEETMEATS AND SIMILAR ARTICLES.

APPLICATION FILED MAY 29. 1919.

1,320,699., Patented Nov. 4, 1919.

4 SHEETS-SHEET l- R. LEUMANN.

MACHINE FOR WRAPPING SWEETMEATS AND SIMILAR'ARTICLES.

' APPLICATION FILED MAY 29. 1919.

i 699 Patented Nov. 4, 1919.

4 SHEETS-SHEET 2.

R. LEUMANN. v

MACHINE FOR WRAPPING SWEETMEATS AND SIMILAR ARTICLES.

APPLICATION FILED MAY 29 am 1 9 1 A 0 N G 6 t H 6 4T0 a P 4 SHEETSSHEET 3.

jwem arx R. LEUMANN.

APPLICATION FILED MAY-29.1919.

FOR WRAPPING SWEETIVIEATS AND SIMILAR ARTICLES.

Patented Nov. 4, 1919.

4 SHEETSSHEET 4.

RICHARD LEUMANN, OF cHAILLY-suR-LAUsAnNE, SWITZERLAND.

MACHINE FOR WRAPPING SWEETMEATS AND SIMILAR ARTICLES.

eaaeaa.

T 0 all whom it may concern:

Be it known thatI, RICHARD LEUMANN, a citizen of the Republic of Switzerland, residing at Villa La Loex, Chailly-sur- Lausanne, Switzerland, have invented certain new and useful Improvements in Machines for WVrapping Sweetmeats and Similar Articles; and I do hereby declare the following to be a clear, full, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification,

This invention relates to improvements in machines for wrapping sweetmeats and similar articles in which a tubular wrapper is applied to the sweetmeat and the ends of said wrapper are so twisted together by means of two oppositely arranged, adjustable and rotatably mounted tongs as to enlarge outwardly. The machine according to this invention comprises means adapted to apply the wrapper to the article to be inclosed .and means adapted to feed said article together with its wrapper toward a movable holding member which in its turn is adapted to carry the ends of the wrapper inclosing the article within reach of tongs effecting the twisting of said ends, the holding member keeping the article together with its wrapper stationary while the twisting of the ends of the wrapper takes place.

The invention consists'also in the particular construction, arrangements and combination of parts of the wrapping-machine as will be hereinafter fully set forth and pointed out in the claims, reference being had to the accompanying drawings showing by way of example a machine according to this invention for wrapping up sweetmeats.

In these drawmgs:

Figure 1 is a plan view of the machine;

Fig. 2 is a section on the line II-II of Fig. 3; I

Fig. 3 is a section on the line IIIIII of Fig. 1; a

Fig. 4 is a section on the line IVIV of Fi 1' Fig. 5 illustrates on an enlarged scale a detail;

Fig. 6 shows on an enlarged scale a section on the line VI-VI of Fig. 1.;

Specification of Letters Patent.

Patented Nov. 4, 1919.

Application filed May 29, 1919. Serial No. 300,767.

Fig. 7 is a side view of Fig. 6,

Fig. 8 is a front view on an enlarged scale of one of the twisting tongs.

Fig. 9 shows the mechanism for cutting off the tubular hulls of paper,

Fig. 10 shows the mechanism for arresting the sweetmeats in the proper position relatively to the hullsin which they have to be inclosed;

-Fig. 11 illustrates the driving mechanism for the pusher-arm;

Fig.12 illustrates the. driving mechanism for the holding tongsand Fig. 13 the driving mechanism for the twisting tongs.

Fig. 11 shows the mechanism for imparting an intermittent movement to the table carrying the sweetmeats, and Figs. 15-20 illustrate the manner of operation of the wrapping machine.

Fig. 21 shows a modification of a detail.

Like reference letters refer to like parts throu bout the drawings.

Re erring to the drawings, 5 denotes a circular table carried by a shaft 3 which is supported by stationary bearings 1 (Fig. 3), fixed to the frame 100 of the machine. To the shaft 3 is fixed a toothed wheel 2 with which engages a pawl 105 (Figs, 2,14) carried by an arm 104 fixed to the shaft 3. 4 The arm 104= is connected to a rod 103 carrying aroller 106 cooperating with a cam groove of a cam 102 fixed to the maindriving shaft 101. The latter carries a. loose pulley 107 and a. fast driving pulley 108. Upon a rotation of the shaft 101, the shaft 3 is rotated in an intermittent manner by said ratchet mechanism 2, 105.

The table 5 is provided with recesses 4 adapted to receive the sweetmeats 84 (Fig. l) to be wrapped. Immediately beneath the table 5 is provided a stationary circular plate 7 (Fig. 3) having a single slot or aperture 6. The latter communicates with an inclined channel 8 fixed to sa-id plate 7 and 100 in'a support 109 fixed to the frame 100 and 105 it is connected to a rod 10, the latter being connected in its turn to a lever 110 (Figs. 11, 3, 2) pivotally mounted at 111 in the frame 100. The lever 110 carries a; roller cooperating with a cam 112 mounted on the main 110 passing over a guide-roller 13, into a cylindrical hull 15. The lower end of the channel 8 referred to is so arranged with regard to the device 12 that the circular hull,

shaped in this device, and the lower end of said channel have a common longitudinal axis (see Fig. 15). At adeterminate point of a continuation of this axis'is arranged an arresting mechanism (Fig. 10) comprising a pair of double armed levers 17, 18 and 19, 20 pivotally mounted on the stationary shaft 16. The arms 17 and 19 are provided with a jaw-like portion 21, while the arms 18, 20 are pivotally connected at 22 to two rods 23, 23, The latter are in their turn connected to an angle lever 24 pivotally mounted on the frame 100. This lever 24 is operatively' connected to a rod 114 which acts upon a double armedlever 115 pivotally mounted on the frame 100'of the machine and acted upon at one end: by a spring :116, while its second end carries a roller 117 cooperating with a cam-disk 118 fixed to the main driving shaft 101. The arrangement is such that u on a rotation of the shaft 101 the arms 1 ,19 are alternately moved toward and away from one another. In alinement' with the arresting mechanism just described is. arranged the operative portion of a scissors-like cutting mechanism (Fig. 9) comprising two double armed levers 25, 26 and 27, 28 pivotally mounted on a stationary shaft 119.- The arms 26 and 28 are desi ned as knives, while each of the arms 25, 27 is connected to a rod 29. The rods 29 are pivotally connected at 30 to an angle lever 31, which is pivotally mounted on the frame 100 and connected in its turn to a rod 120. The latter isfixed to a lever 121 pivotally mounted on the frame 100 and carrying a roller 123 and acted upon by a spring 122. The roller 123 cooperates with a'cam disk 124' fixed to the driving shaft 101. Upon a rotation of the latter, the knives 26, 28 are rocked about the stationary shaft 119. v

32' (Figs. 1, 3) designates a device provided for imparting a reciprocating movement to gripping tongs adapted to impart a feed movement to the sweetmeat and the the machine and carrying a roller running in a cam-groove 127 of a cam disk 126 fixed to a shaft 135 (Fig. 2) geared with the main driving shaft 101. Upon a rotation of the latter, the rod 36 receives a reciprocating movement. The sleeve 34 carries two arms 38, 38 (see also Figs. 6 and 7) pivotally connected to it at 37 and forming a portion of the gripping tongs 39, 39 arranged at right angles to the axis of the sleeve 34. 40 are springs having the tendency to move the jaws of said tongs 39, 39 toward one another. The sleeve 34 acts as a guide fora rod 41 adapted to be moved within said sleeve 34 and pivotally connected at one end at 42, 42 to two links 43, 43 and hearing at the'second end against a roller 44 (Fig. 3) carried by an angle lever 128 .pivotally mounted on the frame 100. The lever 128 carries a second roller engaging a cam groove 129 of the cam disk 126 (Figs. 2, 3). The two links 43, 43 are connected 'at 45,45 to the arms 38, 38, so that upon a rotation of the shaft 135 causing a to and fro movement of the rod 41, the tongs 39, 39 are alternately opened and closed.

32- designates a device similar to the device 32 and adapted to be moved in a direction at right angles to the direction in which said device 32 is moved at the end of its stroke. Said device 32 is provided for imparting a reciprocating movement to the tongs holding the sweetmeat together with its hull while the ends of the latter are twisted together. This device com rises a stationary guide 46' for a sleeve 4 (Fig. 12). To the latter is fixed a rod 48 connected to a double armed lever 130 which is pivotally mounted on the frame 100 and which carries a roller engaging a cam groove 132 (Figs. 12 and 2) of a cam disk 131 fixed to the driving shaft 101. Upon a rotation of the latter, the sleeve 47 receives a reciprocating movement. The sleeve 47 carries gripping arms 49, 49 (Figs. 1, 6, 12) provided with fork-like jaws 50, 50 and adapted to act in a manner, described more fully later on as a holding member for the sweetmeat and its hull. The arms 49, 49' are connected by means of links 50 Figs.

-6 and 12) to a rod 51 having at one end a 133 pivotally mounted on the frame 100 and carrylng at its second end a roller engaging a cam-groove 134 of the cam disk 131 adapted to impart; to the rod 51 a to and fro movement upon a rotation of the shaft 101..

On both sides of the device 32' are ar ranged symmetrically to it two devices 54, 54 (Figs. 1, 13) which are for twisting together the, ends of the hull inclosing' the sweetmeat to be wrapped up. Each of said devices 54 comprises a sleeve 56 (Figs. 1 and 13, 8) slidably and rotatably mounted in a stationary guide 55. The sleeve 56 is 'provlded with agrooved, drum-like portion 57 and at one end it is operatively connected to the arms 58, 58. The free ends 59, 59 of the latter are adapted to act as clamping jaws. To the second end of the sleeve 56 is fixed a disk 61 provided with a circular groove 60 in which runs a roller 62. The latter is carried by a lever 137. The lever 137 of one of the devices 54 is pivotally mounted on the shaft 136, .while the lever 137 of the second i device 54 is'pivotally mounted on a shaft 138 (Figs. 2,13) supportedby the frame 100 of the machine. The lever 137 pivotally mounted on the shaft 136 is three armed, while the lever 137 pivotally' mounted on the shaft 138 isonly double armed. The two levers 137 are operatively connected by a rod 139 (Fig.2). The three armed lever 137 carries a roller 140 (Fig. 2) running in a cam groove 144 of a cam disk 141 fixed to the shaft 135, so that upon a rotation of the shaft 101 the sleeves 56 receive a toand fro movement in theiraxial direction.

Each sleeve 56 acts as a guide for a rod 63 movably mounted therein. Each rod 63 carries at one end links 64, 64 connecting it to the arms 58, 58; the second end of each rod 63 rests against a roller 65. The rollers 65 of the two devices 54 are carried by two levers 142 (Fig. 13), the one of which is pivotally mounted onthe shaft 136 and has three arms, While the second one is pivotally mounted on the shaft 138 and has only two arms. The two levers 142 are operatively connected by a rod 143. The three armed lever 142 carries a roller 146 running in "a of the lovers 72 carries a roller 74 running second groove 145 of the cam disk 141, so

that upon a rotation of the shaft 101 said rods 63 are moved to and fro in their axial direction.

' Each sleeve 56 together with the parts connected to itreceives a rotary. motion by means of an endless driving rope 66 (Figs.

1, 4) wound in several turns around the portion 57 of it-and passing over a guide roller 67. Into each rope 66 is inserted a tension spring 68 imparting a certain resiliency to said rope 66. The drive of each rope 66 is effected by a lever 72 pivotally mounted at 71 in a stationary support 146. The lever 72 has several notches 73 one of which engages a rib 70 (Fig. 5) of a frame like member 69 inserted into the rope 66. Each in a cam groove 75 of a cam disk 76 and 76 respectively. The disks 76, 76 are fixed to the shaft 101and impart a rocking move- "ment to the levers 72 upon a rotation of; said shaft 101, saidleverscausing then in their.

turn a rotation of the sleeves. 56 by means of the ropes 66. The arrangement of the cam disks 76 and 7 6 is such that the driving ropes 66 of the two devices 54 are always moved in opposite directions.

The amount by which each of the clamping tongs is turned angularly depends on. the amount by which the member 69 and the rope 66 are moved upon an oscillation of the levers 72: and it is also dependent on the notch 73 into which engages the rib of the member 69, ie., on the distance of said member 69 from the pivot 71 ofthe lever 7 2. The guide roller 67 is adj ustably mount-- structed as hereinbefore described is as fol- I lows placed in the recesses 4 of the table 5 receiving a slow intermittent rotary motion in the direction of the arrow B (Fig. 1). Each sweetmeat 84 contained in a recess 4 is supported by the plate 7 until it is brought above the slot 6 provided in the plate 7 when it is caused by gravity to fall into the channel 8 and to pass into the hull 15 which has been shaped to a tubular inclosure by the mechanism 12 to which is supplied a strip of paper 14. Each time that a recess 4 is brought into vertical alinement with the recess 6, the arresting mechanism illustrated on an enlarged scale in Fig. 10 is so actuated that the jaws 21 are moved toward =one another. The latter cause a contraction of 15.) to such anamount that the sweetmeat The sweetmeats 84 to be Wrapped are sliding down the channel 8 is prevented from slipping through said Wrapper and is always arrested at the same place just in front of the members 17, 19.

When a sweetmeat has been caused to slide down the channel 8, the arm 11 is caused to swing into said channel 8 pushing any sweetmeat, that for any reason has been arrested in said channel 8 at a certain distance from the members 17 19, just in front of the latter.-

- Meanwhile the feed device 32 has been actuated in the required manner. so that the Fig. 1). As a result of this, the jaws 39, 39 i have been moved under the influence of the roller 44 overcoming the actioh of the springs 40, away .from one another so that the tubular wrap-per 15 can be moved past said jaws 39, 39. While the jaws 39, 39 are moved in the manner just referred to, the arresting mechanism has been opened (see position shown in Fig. 10 in point and dash lines) in order that the jaws-39. 39 may be advanced to the position 0 (Fig. 16) in which they securely seize the sweetmeat together with the hull inclosing it at its min dle. To the latter end the roller 44 is moved backward just at the time at which the gripplng tongs 39, 39 are moved into the position C, the jaws of said tongs being then caused to move toward one another by the springs 40.

The feed device 32 and the closed gripping tongs 39, 39 are now moved in the direction of the arrow D (Fig. 16) until said tongs 39, 39 are brought into the position E,which but for a very small difference corresponds to the position assumed in Fig. 1 by the feed device 32 relatively to the twisting devices 54. While this takes place, the strip of paper 14 is drawnv solely by the pulling action exerted upon it by the sweetmeat moved in" of the arresting mechanism the next sweet-- meat slipping down the channel 8. Upon the severing off of the tubular Wrapper portion inclosing the sweetmeat and while the tongs 39, 39 are still closed, the feed device 32 is moved to a further small amount toward the left, 2'. 0., in the direction of the arrow F (Fig. 17) so that the severed off end G is moved clear away from the knives 26, 28 and the gripping tongs 39, 39 are moved into a osition lying in the path of movement of t e device 32 (Figs. 1 and 17). The latter has been advanced in the meanwhile into a position in which the holding tongs 50-kept open just as the gripping tongs 39while they are advanced and afterward closed by means of the roller 53are adapted to seize the sweetmeat and the hull inclosing it, the sweetmeat being for the present still carried by the gripping tongs 39 (see upper portion of Fig. 18).

The roller 44 is now brought to act for a second time upon the rod 41 in order to slightly advance .it, so that the gripping tongs 39 are opened. Hereupon, the device 32 is so operated as to move the holding tongs 50 together with the sweetmeat and its wrapper in the direction of the arrow H (Fig. 18) until the tongs 50 are brought in alinement with the two twisting tong 59 (see lower half of Fig. 18), the clawsof which are just opened, (2'. 6., 1n the positlon shown in Fig. 8 in point and dash lines) In this position of the tongs 59, the roller 74 (Fig. 4:) runs in a concentric'portion of the cam-groove 75 so that said tongs 59 remain stationary. In the further course of the operation of the machine, the roller 74 passes into the eccentric portion of the groove 75, I the twisting tongs, which in the meantlme have been closed, being then caused to rotate in opposlte dlrections (Fig. 19). As a re) sult of this, the ends L and K of the wrapper I inclosing the sweetmeat held fast by the Jaws of the tongs 59 are so twisted together that they become fiat and flare outwardly from the ends of the sweetmeat or other wrapped article, the holding tongs 50 remaining closed and the sweetmeat and 1ts wrapper remaining stationary while the ends of the latter are twisted together. In order to prevent the wrapper from being torn when its ends are twisted together, the

twisting tongs 59, 59 must be moved a certain amount toward one another while the twisting takes place; this can be attained by choosing the stroke of the rollers 62 and 65 of a suitable magnitude.

When the roller 74 passes again into a concentric portion of the cam-groove 75, the rotary movement ofthe twisting tongs 59 ceases and at the same momentthe roller 65 effects an opening of said tongs 59. Hereupon, the guide rod 48 is moved in a sense causing a movement of the holding tongs 50 in the direction of the arrow M (Fig. 20)

until the wrapped up sweetmeat conveyed above the middle of a discharging aperture 85 provided in the base plate of the machine is stripped off by stationary pins 86 as soon as the tongs 50 are opened by the roll 53, the stripped off sweetmeat inclosed in its wrapper falling through the aperture 85 into a collecting receptacle or the like.

lVhat I claim now as my invention is:

1. A wrapping-machine of the character described, comprising means adapted to wrap a hull around the article to be inclosed, a holding member arranged at a distance from said means, feed means adapted to to said holding member, means for moving said holding member relatively to the article inclosed in the hull, two adjustable twistin members arranged oppositely one another and adapted to seize the endsof the hull inclosing the article to be wrapped, and means for rotating said twisting members in opposite directions, the holding member being adapted to bring the ends of the hull within reach of said twisting members.

2. A wrapping machine of the character described, comprising means to wrap a hull conveythe article surrounded by the hullin a tubular-like manner around the article tobe inclosed, a holding member arranged at a distance from said means, feed means to convey the article surrounded by the tubular hull to said holding member, means for .moving said holding member relatively .to

the article surrounded by the tubular hull, two oppositely arranged adjustable twisting members adapted to, seize the endsof the tubular hull inclosing .the article to be wrapped, and meansfor rotating said twisting members in opposite directions',,said

. site 'directions, said holding holding member being adaptedtobring theends of the tubular hull within reach of said twisting members, whereby the latter, upon their rotation and while the article and hull are held stationary by said holding members, twist the ends of the hull together so as to cause them to flatten and flare out-- wardly from the ends of the article.

3. A wrapping machine of the character described, comprising means for forming a continuous strip of paper into a tubular hull, means for conveying the article to be wrapped into the tubular-shaped hull, a reciprocating holding member, feed means movable in the direction of the tubularshaped hull, and adapted to convey the article to be wrapped together with. its hull to said holding means and to simultaneously feed paper to said forming means, two oppositely arranged adjustable twisting members adapted to seize the ends of the tubular hull inclosing the articleto be wrapped, and means for rotating said twistin members in opposite directions, said holding member being adapted to bring the ends of the tubular hull within reachof said twisting members, whereby the latter, upon their rotation and while the article and its hull are held stationary by said holding members, twist the ends of the hull together so as to cause them to flatten and flare outwardly from the ends of the article.

4:. A wrapping machine of the character described, comprising means for forming a continuous strip of paper into a tubular hull, means for conveying the article to be wrapped into the tubular-shaped hull, means to contract the tubular-shaped hull to secure a determinate position of the article to be wrapped relatively to the hull, a reciprocating holding member, gripping means movable in the direction of the hull, and adapted to convey the article to be wrapped together with its hull to said holding means and to simultaneously feed paper to said forming means, two oppositely ar-' ranged adjustable twisting members adapted to seize the ends of the tubular hull inclosingthe article to be wrapped, and means for rotating said twisting members in oppomember being adapted to bring the ends of the tubular hull within reach of said twisting members.

5. A wrapping machine of the character described, comprising means for forming a continuous stri of paper into a tubular hull, means or conveying the article to be wrapped into the hull, means t0 contraet' the tubular-shaped hull to secure a determinate position of the article to be wrapped relatively to the hull,

- holding tongs movable transversely to the path of movement of thehull, gripping tongs movable in the direction of the hull, to convey the article to be wrapped together with its hull to said holding tongs and to simultaneously feed paper to said forming means, two oppositely arranged adjustable twisting members adapted to seize the ends of the tubular hull inclosing the article to be wrapped, and means for rotating said twisting members in opposite directions, said holding tongs adapted to bring the ends of the tubular hull within reach of said twisting members, whereby while the article and its hull are held stationary by said holding tongs, the ends of the hull are twisted together so as to cause them to flatten and flare outwardly from the ends of the article.

6. A wrapping machine of the character described, comprising means adapted to wrap a hull in a tubular-like manner around the article to be inclosed, a holding member arranged at a distance from said means, feed means to convey the article surrounded by the tubular hull to said holding member,

means for moving said holding member relatwisting members adapted .to seize the ends of the tubular hull inclosing the article to be wrapped, means for rotating said twisting members in opposite directions while the article together with its hull is held stationary by said holding member, whereby the ends of the hull are flattened and flared outwardly from the ends of the article, stationary stops, and means, operable after twisting the ends of the hull and upon the releasing ofo said ends by the twisting means,'to impart'an additional movement toward said stationary stops to cause the latter to remove the wrapped article from said twistingv means. 1, 7 7. A wrapping machine of thdcharacte described, comprising means to form a: continuous strip of paper into a tubular hull, means for conveying the article to be wrapped into the tubular shaped hull, means to contract the hull to secure a determinate position of the article to be wrapped relatively to the hull, a reciprocable holding member, gripping means reciprocable in the direction of the hull and adapted to convey the article to be wrapped together with its hull to said holding means and to simultaneously feed paper to said forming means, two oppositely arranged adjustable twisting tongs adapted to seize the ends of the tubular hull inclosing the article to be wrapped, endless members surrounding portions of said twisting tongs, means to move said endless members in their axial direction for member being adapted to bring the endsof the tubular hull within said twisting tongs to twist said ends together, means to open part an additional movement to the article after twisting the ends of its hull and upon rotating the twistingtongs, said holding and close said twisting tongs, means to im- 20 endless members surrounding portions of the releasing of said ends by the twisting tongs, and stationary stops mounted in the path of the twisted hull to remove the latter from said twisting means.

8. A wrapping machine ofthe character described, comprising means to form a continuous strip of paper into a tubular hull,

means for conveying the article to be wrapped into the formed hull, means to contract the tubular hull to secure 'a determinate position of the article to be wrapped relatively to the hull, a reciprocating holding member, gripping means reciprocable in said twisting members, a pivotally mounted leverf'or moving said endless members in their axial direction to rotate the twisting members, means to oscillate said lever, the

holdin member being adapted to bring the ends 0 the tubular hull within said twisting members to twist said ends together, means to open and close said twisting members, means to impart an additional movement to the article upon the twisting of theen'ds of its hull and upon the releasing of said ends by the twisting members, and stationary stops mounted in the path of the twisted hull to remove the wrapped articles from said twisting mean In testimony that I claim the foregoing as my invention,-I have signed my name.

RICHARD LEUMANN.

Witnesses H. AUE, E. TnmnY. 

